Police in the US state of Oklahoma have arrested a man for allegedly shooting his grandparents, then cutting off their heads. CNN reports that three small children were found hiding in the garage.

The officers went to the home in order to make a welfare check and found 20-year-old Quinton Laster outside.

"Both victims had been shot and decapitated," said a police spokesperson. "The children were unharmed, removed from the scene, and later united with their families."

Laster is expected to be charged with first-degree murder.